CN219892321U - Lithium battery ignition preventing device for electric bicycle - Google Patents
Lithium battery ignition preventing device for electric bicycle Download PDFInfo
- Publication number
- CN219892321U CN219892321U CN202321184008.9U CN202321184008U CN219892321U CN 219892321 U CN219892321 U CN 219892321U CN 202321184008 U CN202321184008 U CN 202321184008U CN 219892321 U CN219892321 U CN 219892321U
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- CN
- China
- Prior art keywords
- lithium battery
- material container
- electric bicycle
- fusible material
- prevention device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 230000002265 prevention Effects 0.000 claims description 11
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a lithium battery ignition preventing device for an electric bicycle, including an top open-ended box and lid on the box, the bottom half is provided with lithium cell group mount pad, still includes: the temperature sensor is used for measuring the internal temperature of the box body and is electrically communicated with a display screen on the electric vehicle through a wire harness; a fusible material container which is arranged on the inner side of the cover body and is internally provided with a fire extinguishing agent; the puncture part is arranged on the inner side of the cover body adjacent to the fusible material container and is used for puncturing the fusible material container.
Description
Technical Field
The utility model relates to the field of fire prevention devices, in particular to a lithium battery fire prevention device for an electric bicycle.
Background
With the development of electric bicycles, lithium batteries have been widely used in electric bicycles. In an electric bicycle, a lithium battery is generally installed in a pedal area in front of a seat, and because of the characteristic that the lithium battery is very active in chemical property, internal short circuit, overheating and the like are easy to generate in the use process to cause fire, so that fire accidents are caused, and serious influence is brought to daily life of people. The lithium battery cell belongs to a substance containing electric energy, and once internal thermal runaway or short circuit of positive and negative polar plates occurs, internal discharge can be continued until the electric charge is discharged no matter whether the circuit outside the cell can be cut off. The thermal runaway or internal short circuit process of the battery core inevitably causes heat generation, the heat generation causes temperature rise, and when the temperature rises to a certain degree, electrolyte or a diaphragm can generate smoke and burn to enter an autoignition state. Causing safety accidents such as fire disaster and the like of the lithium battery. Therefore, aiming at the characteristic of the installation position of the lithium battery in the electric bicycle, an anti-ignition device capable of effectively preventing accidents such as ignition of the lithium battery is urgently needed.
In view of this, there is a need for improvements in the art to solve the above-described problems.
Disclosure of Invention
The purpose of the utility model is that: a lithium battery ignition preventing device for an electric bicycle is provided, which is used for preventing the lithium battery from overheating and igniting.
The utility model is realized by the following technical scheme:
the utility model provides a lithium cell anti-flaming device for electric bicycle, includes an upper portion open-ended box and lid closes lid on the box, the bottom half is provided with lithium cell group mount pad, still includes:
the temperature sensor is arranged in the box body and is electrically communicated with a display screen on the electric vehicle through a wire harness;
a fusible material container which is arranged on the inner side of the cover body and is internally provided with a fire extinguishing agent;
a piercing member disposed on an inside of the lid body adjacent to the fusible material container, comprising:
the fixing part is fixed on one side in the cover body, the fixing part is opened towards one end of the fusible material container, and hook holes are symmetrically formed in two sides of the fixing part;
one end of the spring is fixed in the fixing part;
the puncture nail is characterized in that one end of the puncture nail is a round head part, the other end of the puncture nail is a spike part, the round head part is fixed with the other end of the spring, and the spike part is a free end and points to the fusible material container;
the clamping part is provided with a shaft connection part at one end and two clamping arms symmetrically arranged at the other end, the tail ends of the two clamping arms are clamping hooks, the shaft connection part is fixed on the inner side of the cover body through a fastener, and the two clamping hooks penetrate through two hook holes on the fixing part and hook the round head part of the puncture nail to enable the spring to be in a compressed state;
the easy-to-fold part is fixed on the two clamping arms, and the easy-to-fold part and the clamping arms positioned between the easy-to-fold part and the shaft connection part form a triangular shape;
the button is provided with a through hole on the cover body at the triangular inner position, the button penetrates through the through hole, and the free end of the button is a conical head part; the lower end of the conical head is in abutting connection with the clamping arm and the easy-to-fold part which form a triangular shape.
Further, the easy-to-fold part is a reducing plastic rod.
Further, the side wall and the bottom in the box body are provided with flame retardant rubber.
Further, the side wall of the box body provided with the flame retardant rubber is symmetrically provided with ventilation holes.
Further, the fusible material container is made of a plastic film or a low melting point alloy.
Further, the fire extinguishing agent is one of carbon dioxide, nitrogen and sodium bicarbonate.
Further, the temperature sensor is arranged on the side wall in the box body or at the bottom in the box body.
Furthermore, the box body and the cover body are both made of aluminum alloy.
Advantageous effects
The lithium battery pack is arranged in the box body, the fusible material container containing the fire extinguishing agent is arranged on the inner side of the cover body, and if the lithium battery pack in the box body is heated too high, the fusible material container is melted, and the fire extinguishing agent in the box body falls out to cover the fire position for extinguishing fire. The temperature sensor is arranged in the box body and used for detecting the temperature of the lithium battery pack in the box body, the puncture part is further arranged on the inner side of the cover body close to the fusible material container, the button for controlling the puncture part is arranged on the outer side of the cover body, and if the temperature is too high, a user can manually press the button to enable the puncture nails in the puncture part to extend out to puncture the fusible material container, so that the fire extinguishing agent in the puncture part is covered on the lithium battery pack, and fire is prevented. The device has simple structure and convenient use, and can effectively prevent the occurrence of the fire event of the lithium battery pack.
Drawings
FIG. 1 is a schematic view of the overall external structure of the present utility model;
FIG. 2 is a schematic view of a case according to the present utility model;
FIG. 3 is a schematic view of the inside of the cover of the present utility model;
FIG. 4 is a schematic view of a piercing member according to the present utility model;
FIG. 5 is a schematic illustration of the ejection of a piercing spike in a piercing member of the present utility model;
fig. 6 is a schematic view of the structure of the button in the present utility model.
In the figure: 1. a case; 11. a vent hole; 12. flame retardant rubber; 2. a cover body; 21. a through hole; 3. a fusible material container; 4. a piercing member; 41. a fixing part; 411. a hook hole; 42. puncturing nails; 421. a spike; 422. a round head; 43. a clamping member; 431. a shaft connection part; 432. a clamping arm; 433. a clamping hook; 44. an easy-to-fold portion; 45. a spring; 5. a lithium battery pack; 6. a button; 61. a pre-tightening spring; 62. a connecting shaft; 63. a cone head; 7. a temperature sensor.
Detailed Description
The features of the utility model and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1 to 3, a lithium battery fire prevention device for an electric bicycle is developed according to the installation position characteristics of a lithium battery in the electric bicycle, and the device comprises; a case 1, a cover 2, a fusible material container 3, a temperature sensor 7 and a puncture member 4.
Wherein, box 1 top opening, the bottom in the box 1 is provided with lithium cell group 5 mount pad for place lithium cell group 5, lid 2 covers on box 1 with detachable mode, be provided with temperature sensor 7 in the inside temperature sensor 7 that is provided with of box 1, temperature sensor 7 can set up on the lateral wall in the box 1 and the bottom in the box 1, also can set up on the inboard of lid 2, be used for real-time detection box 1 in lithium cell group 5's temperature, temperature sensor 7 passes through pencil electrical communication with the display screen on the electric motor car, the user of being convenient for observes the temperature condition of box 1 inside cell group in real time when using the electric motor car, still be equipped with on the box 1 and connect socket (not shown), sensor 7's pencil passes through connect socket transmission signal and with real-time temperature numerical value on the display screen of electric motor car.
A fusible material container 3 is fixed on the inner side of the cover body 2, and the fusible material container 3 has a low melting point and can be made of plastic films or low melting point alloys. When the temperature in the box body 1 is too high, the fusible material container 3 can be melted, the fusible material container 3 is positioned right above the lithium battery pack 5, and the fire extinguishing agent is filled in the fusible material container 3; as shown in fig. 4, a piercing member 4 is provided on the inside of the lid body 2 adjacent to the fusible material container 3, the piercing member 4 being operable to pierce the fusible material container 3, the piercing member 4 including a fixing portion 41, a spring 45, a piercing spike 42, a holding member 43, and a frangible portion 44.
The fixing part 41 is fixedly arranged on one side in the cover body 2, the inside of the fixing part 41 is hollow, the fixing part is opened towards one end of the fusible material container 3, one end far away from the fusible material container 3 is closed, the two sides of the fixing part 41 are symmetrically provided with hook holes 411, a spring 45 is fixedly arranged in the fixing part 41, and one end of the spring 45 is fixedly connected with the closed end in the fixing part 41;
the other end of the spring 45 is fixedly provided with a puncture nail 42, one end of the puncture nail 42 is a round head 422, the other end of the puncture nail is a spike 421, one end of the round head 422 is fixedly connected with the other end of the spring 45, and one end of the spike 421 is a free end and points to the fusible material container 3;
the inner side of the cover body 2 is also fixed with a clamping component 43, one end of the clamping component 43 is provided with a shaft connection part 431, the other end of the clamping component 43 is provided with two symmetrically arranged clamping arms 432, the tail ends of the two clamping arms 432 are provided with clamping hooks 433, the shaft connection part 431 is fixed on the inner side of the cover body 2 through a fastener, the two clamping hooks 433 penetrate through the two hook holes 411 on the fixing part 41 and hook the round head part 422 of the puncture nail 42 so that the spring 45 is in a compressed state.
The frangible portion 44 is connected to the two clamping arms 432, and the frangible portion 44 is used for tensioning the two clamping arms 432, so that the two clamping arms 432 are in a tensioned state, and the two clamping arms 432 in the tensioned state pass through the two hooking holes 411 in the fixing portion 41 and hook the round head 422 of the piercing pin 42 to enable the spring 45 to be in a compressed state.
As shown in fig. 5, if the frangible portion 44 breaks, the two clamping arms 432 in a tensioned state are opened outwards to drive the two clamping hooks 433 to separate from the hook holes 411 on the fixing portion 41, and at this time, the compressed springs 45 are ejected to push the piercing pins 42 to extend out of the fixing portion 41, the sharp-pointed portions 421 on the piercing pins 42 pierce the fusible material container 3, and after the fusible material container 3 breaks, the fire extinguishing agent in the interior of the fusible material container falls and covers the lithium battery pack 5 with excessively high temperature below, so as to prevent the lithium battery pack 5 from firing.
The foldable part 44 is connected to two clamping arms 432, and the foldable part 44 and the clamping arms 432 between the foldable part 44 and the shaft connection part 431 form a triangle; as shown in fig. 6, a through hole 21 is formed in the cover body 2 at the triangular inner position, a button 6 is mounted in the through hole 21, the button 6 comprises a head part convenient to operate at the upper end, a connecting shaft 62 detachably connected with the head part and a conical head part 63 positioned at the lower end of the connecting shaft 62, the head part is connected with the conical head part 63 through the connecting shaft 63, the free end of the lower end of the button 6 is the conical head part 63, the button 6 passes through the through hole 21 and is tightly propped against the cover body 2 through a pre-tightening spring 61, and the lower end of the conical head part 63 of the button 6 is in abutting connection with two clamping arms 432 forming the triangular shape and the easy-to-fold part 44.
When the temperature of the lithium battery pack 5 in the box body 1 is too high, the fusible material container 3 can be melted, and after the fusible material container is melted, the fire extinguishing agent in the fusible material container falls and covers the lithium battery pack 5, so that the lithium battery pack 5 is prevented from igniting. In addition, the temperature sensor 7 is installed inside the box body 1, the temperature sensor 7 is electrically communicated with a display screen wire harness on the electric bicycle, a user can observe the temperature condition of the lithium battery pack 5 in real time, if the temperature of the lithium battery pack 5 is too high, when the fusible material container 3 is not melted, the user can manually press the button 6 on the cover body 2 at this time, the conical head 63 at the lower end of the button 6 stretches out the two clamping arms 432 and the foldable part 44 which are in abutting connection with the button, the foldable part 44 is fragile, the foldable part 44 is broken under the extrusion of the conical head 63, the two clamping arms 432 in a tensioning state stretch outwards to drive the two clamping hooks 433 of the two clamping arms 432 to separate from the hook holes 411 on the fixed part 41, the compressed spring 45 pops up to push the puncture nails 42 to stretch out the fixed part 41, the puncture parts on the fusible material container 3, and the extinguishing agent in the fusible material container 3 drops to cover the high-temperature lithium battery pack 5, so that the lithium battery pack 5 is prevented from firing.
As a further improvement of the present utility model, the foldable portion 44 is a reducing plastic rod, and the local cross-sectional area of the reducing plastic rod is significantly smaller than that of other portions, so as to form a structure with uneven thickness, preferably, two ends of the foldable portion 44 are fixedly connected to the clamping arms 432 in a snap connection manner, so that the two clamping arms 432 maintain a relatively fixed state. By reducing the partial cross section, when the temperature in the box body 1 is too high, the thinner part of the frangible portion 44 is melted in advance, the two clamping arms 432 in a tensioned state are opened outwards, and the piercing spike 42 pierces the fusible material container 3 to release the fire extinguishing agent along with the ejection of the compression spring 45. If the frangible portion 44 is not broken by itself, the display screen continuously gives out an audible and visual alarm when the temperature in the case 1 is continuously increased, the driver can push the button 6 downwards, the conical head 63 of the button 6 stretches the frangible portion 44, the purpose of expanding the two clamping arms 432 can be achieved, and finally the puncture nails 42 are released, so that the puncture nails 42 puncture the fusible material container 3, and the extinguishing agent is released to further play roles in reducing temperature, preventing fire or even extinguishing fire.
As a further improvement of the present utility model, in order to prevent the lithium battery in the case 1 from firing, flame retardant rubber is mounted on both the side wall and the bottom in the case 1.
As a further improvement of the present utility model, ventilation holes 11 are symmetrically provided on the side wall of the case 1 mounted with the flame retardant rubber, so that the inside of the case 1 is ventilated for reducing the temperature of the lithium battery pack 5.
As a further development of the utility model, the fusible material container 3 is plastic and can be glued to the inside of the cover 2 by means of double-sided glue.
As a further improvement of the utility model, the fire extinguishing agent is any one of carbon dioxide, nitrogen and sodium bicarbonate.
As a further improvement of the utility model, the box body 1 and the cover body 2 are both made of aluminum alloy, so that the box body is light and has high hardness, and in addition, a protective film can be formed on the surface of aluminum, so that the damage of high temperature to the box body 1 and the cover body 2 can be reduced.
The utility model has simple structure and convenient use, and can solve the problem of fire of the lithium battery pack 5 caused by overhigh temperature.
The examples of the present utility model are intended to be illustrative only and not to limit the scope of the claims, and other substantially equivalent substitutions will occur to those skilled in the art and are intended to be within the scope of the present utility model.
Claims (8)
1. The utility model provides a lithium cell fire prevention device for electric bicycle, includes an upper portion open-ended box and lid closes lid on the box, the bottom half is provided with lithium cell group mount pad, its characterized in that still includes:
the temperature sensor is arranged in the box body and is electrically communicated with a display screen on the electric vehicle through a wire harness;
a fusible material container which is arranged on the inner side of the cover body and is internally provided with a fire extinguishing agent;
a piercing member disposed on an inside of the lid body adjacent to the fusible material container, comprising:
the fixing part is fixed on one side in the cover body, the fixing part is opened towards one end of the fusible material container, and hook holes are symmetrically formed in two sides of the fixing part;
one end of the spring is fixed in the fixing part;
the puncture nail is characterized in that one end of the puncture nail is a round head part, the other end of the puncture nail is a spike part, the round head part is fixed with the other end of the spring, and the spike part is a free end and points to the fusible material container;
the clamping part is provided with a shaft connection part at one end and two clamping arms symmetrically arranged at the other end, the tail ends of the two clamping arms are clamping hooks, the shaft connection part is fixed on the inner side of the cover body through a fastener, and the two clamping hooks penetrate through two hook holes on the fixing part and hook the round head part of the puncture nail to enable the spring to be in a compressed state;
the easy-to-fold part is fixed on the two clamping arms, and the easy-to-fold part and the clamping arms positioned between the easy-to-fold part and the shaft connection part form a triangular shape;
the button is provided with a through hole on the cover body at the triangular inner position, the button penetrates through the through hole, and the free end of the button is a conical head part; the lower end of the conical head is in abutting connection with the clamping arm and the easy-to-fold part which form a triangular shape.
2. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the foldable part is a reducing plastic rod.
3. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the side wall and the bottom in the case are provided with flame retardant rubber.
4. A lithium battery fire prevention device for an electric bicycle according to claim 3, wherein the side walls of the case are symmetrically provided with ventilation holes.
5. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the fusible material container is made of a plastic film or a low melting point alloy.
6. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the fire extinguishing agent is one of carbon dioxide, nitrogen and sodium bicarbonate.
7. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the temperature sensor is provided on a side wall in the case or at a bottom in the case.
8. The lithium battery fire prevention device for an electric bicycle according to claim 1, wherein the case and the cover are made of aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321184008.9U CN219892321U (en) | 2023-05-17 | 2023-05-17 | Lithium battery ignition preventing device for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321184008.9U CN219892321U (en) | 2023-05-17 | 2023-05-17 | Lithium battery ignition preventing device for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219892321U true CN219892321U (en) | 2023-10-24 |
Family
ID=88397610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321184008.9U Active CN219892321U (en) | 2023-05-17 | 2023-05-17 | Lithium battery ignition preventing device for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219892321U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117423948A (en) * | 2023-12-18 | 2024-01-19 | 广州瑞港消防设备有限公司 | Fire prevention and control device for storage battery pack |
-
2023
- 2023-05-17 CN CN202321184008.9U patent/CN219892321U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117423948A (en) * | 2023-12-18 | 2024-01-19 | 广州瑞港消防设备有限公司 | Fire prevention and control device for storage battery pack |
| CN117423948B (en) * | 2023-12-18 | 2024-03-08 | 广州瑞港消防设备有限公司 | Fire prevention and control device for storage battery pack |
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| GR01 | Patent grant |